Question
Which of the following can be measured with a vector network analyzer?
Answer Options
- A) Input impedance
- B) Output impedance
- C) Reflection coefficient
- D) All these choices are correct
Correct Answer: D
Explanation
A Vector Network Analyzer (VNA) is a powerful tool designed to characterize the performance of a device or network by measuring how complex RF signals are transmitted and reflected. Its measurement capabilities go far beyond simple scalar power levels to include phase and magnitude of signals.
By measuring the device’s S-parameters, the VNA can determine every major metric of a linear RF circuit. This includes the input impedance (S_{11} in complex form), the output impedance (S_{22} in complex form), and the reflection coefficient (directly derived from S_{11}). Therefore, All these choices are correct, as they are all core capabilities of a two-port VNA.
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